Avoid use of DB rollback() in LocalFileMoveBatch

Avoid use of DB rollback() in LocalFileMoveBatch

* Verify the DB updates and bail before doing anything instead
  of relying on rollback() if something does not match up.
* Do the file copying before updating the DB so that there is
  nothing to rollback if they fail.
* Improved failCount in case the current version is missing.
  It should also reflect all the missing old versions.

Change-Id: Ie2d316548d8e5584cc69bb9f1425db108b05be5c